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wid-sec-w-2024-0549
Vulnerability from csaf_certbund
Published
2024-03-04 23:00
Modified
2024-06-12 22:00
Summary
Linux Kernel: Mehrere Schwachstellen
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
Der Kernel stellt den Kern des Linux Betriebssystems dar.
Angriff
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen oder einen nicht spezifizierten Angriff durchzuführen.
Betroffene Betriebssysteme
- Linux
{
"document": {
"aggregate_severity": {
"text": "mittel"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2024-0549 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0549.json"
},
{
"category": "self",
"summary": "WID-SEC-2024-0549 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0549"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47087-4132@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47088-269c@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47089-bc5a@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030413-CVE-2021-47090-a429@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47091-edad@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47092-36e2@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47093-ccd0@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47094-8cc7@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030414-CVE-2021-47095-39dd@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47096-40c7@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47097-e7f4@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47098-e11f@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47099-3127@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47100-043d@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47101-f3fa@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030416-CVE-2021-47102-1335@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030416-CVE-2021-47103-4314@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030444-CVE-2021-47104-bedc@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030444-CVE-2021-47105-fa23@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030445-CVE-2021-47106-fdff@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030445-CVE-2021-47107-7dda@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030445-CVE-2021-47108-252a@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030455-CVE-2021-47084-4984@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030455-CVE-2021-47085-3c44@gregkh/"
},
{
"category": "external",
"summary": "CVE Announce auf lore.kernel.org vom 2024-03-04",
"url": "http://lore.kernel.org/linux-cve-announce/2024030455-CVE-2021-47086-cdaa@gregkh/"
},
{
"category": "external",
"summary": "GitHub Advisory Database vom 2024-03-04",
"url": "https://github.com/advisories/GHSA-pfh4-6f3v-4mwm"
},
{
"category": "external",
"summary": "GitHub Advisory Database vom 2024-03-04",
"url": "https://github.com/advisories/GHSA-r296-33w8-272g"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0855-1 vom 2024-03-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018151.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0900-1 vom 2024-03-14",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018167.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0857-1 vom 2024-03-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018154.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0856-1 vom 2024-03-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018155.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0900-2 vom 2024-03-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018182.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0926-1 vom 2024-03-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018204.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:0977-1 vom 2024-03-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018210.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1320-1 vom 2024-04-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018372.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1321-1 vom 2024-04-17",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018375.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1322-1 vom 2024-04-17",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018374.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1877 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1877"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1332-2 vom 2024-04-18",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018378.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1332-1 vom 2024-04-18",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018376.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1322-2 vom 2024-04-18",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018377.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1454-1 vom 2024-04-26",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018431.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1466-1 vom 2024-04-29",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018438.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1480-1 vom 2024-04-30",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018444.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1490-1 vom 2024-05-03",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018445.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1648-1 vom 2024-05-14",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018524.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1646-1 vom 2024-05-14",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018526.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1643-1 vom 2024-05-14",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018529.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1648-2 vom 2024-05-21",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018572.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1870-1 vom 2024-05-30",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-May/018634.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:2010-1 vom 2024-06-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-June/018711.html"
}
],
"source_lang": "en-US",
"title": "Linux Kernel: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2024-06-12T22:00:00.000+00:00",
"generator": {
"date": "2024-06-13T08:07:26.795+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.0"
}
},
"id": "WID-SEC-W-2024-0549",
"initial_release_date": "2024-03-04T23:00:00.000+00:00",
"revision_history": [
{
"date": "2024-03-04T23:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2024-03-12T23:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-03-14T23:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-03-17T23:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-03-24T23:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-04-16T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-04-17T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-04-18T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-04-28T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-04-29T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-05-01T22:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-05-02T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-05-14T22:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-05-21T22:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-05-30T22:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2024-06-12T22:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von SUSE aufgenommen"
}
],
"status": "final",
"version": "16"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c5.16",
"product": {
"name": "Open Source Linux Kernel \u003c5.16",
"product_id": "T033233",
"product_identification_helper": {
"cpe": "cpe:/o:linux:linux_kernel:5.16"
}
}
}
],
"category": "product_name",
"name": "Linux Kernel"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T002207",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-47082",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47082"
},
{
"cve": "CVE-2021-47083",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47083"
},
{
"cve": "CVE-2021-47084",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47084"
},
{
"cve": "CVE-2021-47085",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47085"
},
{
"cve": "CVE-2021-47086",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47086"
},
{
"cve": "CVE-2021-47087",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47087"
},
{
"cve": "CVE-2021-47088",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47088"
},
{
"cve": "CVE-2021-47089",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47089"
},
{
"cve": "CVE-2021-47090",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47090"
},
{
"cve": "CVE-2021-47091",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47091"
},
{
"cve": "CVE-2021-47092",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47092"
},
{
"cve": "CVE-2021-47093",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47093"
},
{
"cve": "CVE-2021-47094",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47094"
},
{
"cve": "CVE-2021-47095",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47095"
},
{
"cve": "CVE-2021-47096",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47096"
},
{
"cve": "CVE-2021-47097",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47097"
},
{
"cve": "CVE-2021-47098",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47098"
},
{
"cve": "CVE-2021-47099",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47099"
},
{
"cve": "CVE-2021-47100",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47100"
},
{
"cve": "CVE-2021-47101",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47101"
},
{
"cve": "CVE-2021-47102",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47102"
},
{
"cve": "CVE-2021-47103",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47103"
},
{
"cve": "CVE-2021-47104",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47104"
},
{
"cve": "CVE-2021-47105",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47105"
},
{
"cve": "CVE-2021-47106",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47106"
},
{
"cve": "CVE-2021-47107",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47107"
},
{
"cve": "CVE-2021-47108",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen im Linux-Kernel. Diese Fehler bestehen in mehreren Komponenten und Subsystemen wie kfence, mac80211 oder KVM und anderen aufgrund mehrerer sicherheitsrelevanter Probleme wie einem Speicherleck, einem Integer-\u00dcberlauf oder einem Stack-Out-of-Bound-Zugriff und anderen. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand herbeizuf\u00fchren oder einen nicht spezifizierten Angriff durchzuf\u00fchren."
}
],
"product_status": {
"known_affected": [
"T002207",
"67646"
]
},
"release_date": "2024-03-04T23:00:00Z",
"title": "CVE-2021-47108"
}
]
}
cve-2021-47090
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
Hulk Robot reported a panic in put_page_testzero() when testing
madvise() with MADV_SOFT_OFFLINE. The BUG() is triggered when retrying
get_any_page(). This is because we keep MF_COUNT_INCREASED flag in
second try but the refcnt is not increased.
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:737!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 5 PID: 2135 Comm: sshd Tainted: G B 5.16.0-rc6-dirty #373
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
RIP: release_pages+0x53f/0x840
Call Trace:
free_pages_and_swap_cache+0x64/0x80
tlb_flush_mmu+0x6f/0x220
unmap_page_range+0xe6c/0x12c0
unmap_single_vma+0x90/0x170
unmap_vmas+0xc4/0x180
exit_mmap+0xde/0x3a0
mmput+0xa3/0x250
do_exit+0x564/0x1470
do_group_exit+0x3b/0x100
__do_sys_exit_group+0x13/0x20
__x64_sys_exit_group+0x16/0x20
do_syscall_64+0x34/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xae
Modules linked in:
---[ end trace e99579b570fe0649 ]---
RIP: 0010:release_pages+0x53f/0x840
References
Impacted products
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"version": "5.10.89",
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"version": "5.15.12",
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cve-2021-47093
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: intel_pmc_core: fix memleak on registration failure
In case device registration fails during module initialisation, the
platform device structure needs to be freed using platform_device_put()
to properly free all resources (e.g. the device name).
References
Impacted products
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cve-2021-47101
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
asix: fix uninit-value in asix_mdio_read()
asix_read_cmd() may read less than sizeof(smsr) bytes and in this case
smsr will be uninitialized.
Fail log:
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
References
Impacted products
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cve-2021-47108
Vulnerability from cvelistv5
Published
2024-03-04 18:15
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/mediatek: hdmi: Perform NULL pointer check for mtk_hdmi_conf
In commit 41ca9caaae0b
("drm/mediatek: hdmi: Add check for CEA modes only") a check
for CEA modes was added to function mtk_hdmi_bridge_mode_valid()
in order to address possible issues on MT8167;
moreover, with commit c91026a938c2
("drm/mediatek: hdmi: Add optional limit on maximal HDMI mode clock")
another similar check was introduced.
Unfortunately though, at the time of writing, MT8173 does not provide
any mtk_hdmi_conf structure and this is crashing the kernel with NULL
pointer upon entering mtk_hdmi_bridge_mode_valid(), which happens as
soon as a HDMI cable gets plugged in.
To fix this regression, add a NULL pointer check for hdmi->conf in the
said function, restoring HDMI functionality and avoiding NULL pointer
kernel panics.
References
Impacted products
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cve-2021-47087
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:34
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
tee: optee: Fix incorrect page free bug
Pointer to the allocated pages (struct page *page) has already
progressed towards the end of allocation. It is incorrect to perform
__free_pages(page, order) using this pointer as we would free any
arbitrary pages. Fix this by stop modifying the page pointer.
References
Impacted products
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cve-2021-47083
Vulnerability from cvelistv5
Published
2024-03-04 18:06
Modified
2024-12-19 07:34
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
pinctrl: mediatek: fix global-out-of-bounds issue
When eint virtual eint number is greater than gpio number,
it maybe produce 'desc[eint_n]' size globle-out-of-bounds issue.
References
Impacted products
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cve-2021-47099
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
veth: ensure skb entering GRO are not cloned.
After commit d3256efd8e8b ("veth: allow enabling NAPI even without XDP"),
if GRO is enabled on a veth device and TSO is disabled on the peer
device, TCP skbs will go through the NAPI callback. If there is no XDP
program attached, the veth code does not perform any share check, and
shared/cloned skbs could enter the GRO engine.
Ignat reported a BUG triggered later-on due to the above condition:
[ 53.970529][ C1] kernel BUG at net/core/skbuff.c:3574!
[ 53.981755][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
[ 53.982634][ C1] CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc5+ #25
[ 53.982634][ C1] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 53.982634][ C1] RIP: 0010:skb_shift+0x13ef/0x23b0
[ 53.982634][ C1] Code: ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0
7f 08 84 c0 0f 85 41 0c 00 00 41 80 7f 02 00 4d 8d b5 d0 00 00 00 0f
85 74 f5 ff ff <0f> 0b 4d 8d 77 20 be 04 00 00 00 4c 89 44 24 78 4c 89
f7 4c 89 8c
[ 53.982634][ C1] RSP: 0018:ffff8881008f7008 EFLAGS: 00010246
[ 53.982634][ C1] RAX: 0000000000000000 RBX: ffff8881180b4c80 RCX: 0000000000000000
[ 53.982634][ C1] RDX: 0000000000000002 RSI: ffff8881180b4d3c RDI: ffff88810bc9cac2
[ 53.982634][ C1] RBP: ffff8881008f70b8 R08: ffff8881180b4cf4 R09: ffff8881180b4cf0
[ 53.982634][ C1] R10: ffffed1022999e5c R11: 0000000000000002 R12: 0000000000000590
[ 53.982634][ C1] R13: ffff88810f940c80 R14: ffff88810f940d50 R15: ffff88810bc9cac0
[ 53.982634][ C1] FS: 0000000000000000(0000) GS:ffff888235880000(0000) knlGS:0000000000000000
[ 53.982634][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 53.982634][ C1] CR2: 00007ff5f9b86680 CR3: 0000000108ce8004 CR4: 0000000000170ee0
[ 53.982634][ C1] Call Trace:
[ 53.982634][ C1] <TASK>
[ 53.982634][ C1] tcp_sacktag_walk+0xaba/0x18e0
[ 53.982634][ C1] tcp_sacktag_write_queue+0xe7b/0x3460
[ 53.982634][ C1] tcp_ack+0x2666/0x54b0
[ 53.982634][ C1] tcp_rcv_established+0x4d9/0x20f0
[ 53.982634][ C1] tcp_v4_do_rcv+0x551/0x810
[ 53.982634][ C1] tcp_v4_rcv+0x22ed/0x2ed0
[ 53.982634][ C1] ip_protocol_deliver_rcu+0x96/0xaf0
[ 53.982634][ C1] ip_local_deliver_finish+0x1e0/0x2f0
[ 53.982634][ C1] ip_sublist_rcv_finish+0x211/0x440
[ 53.982634][ C1] ip_list_rcv_finish.constprop.0+0x424/0x660
[ 53.982634][ C1] ip_list_rcv+0x2c8/0x410
[ 53.982634][ C1] __netif_receive_skb_list_core+0x65c/0x910
[ 53.982634][ C1] netif_receive_skb_list_internal+0x5f9/0xcb0
[ 53.982634][ C1] napi_complete_done+0x188/0x6e0
[ 53.982634][ C1] gro_cell_poll+0x10c/0x1d0
[ 53.982634][ C1] __napi_poll+0xa1/0x530
[ 53.982634][ C1] net_rx_action+0x567/0x1270
[ 53.982634][ C1] __do_softirq+0x28a/0x9ba
[ 53.982634][ C1] run_ksoftirqd+0x32/0x60
[ 53.982634][ C1] smpboot_thread_fn+0x559/0x8c0
[ 53.982634][ C1] kthread+0x3b9/0x490
[ 53.982634][ C1] ret_from_fork+0x22/0x30
[ 53.982634][ C1] </TASK>
Address the issue by skipping the GRO stage for shared or cloned skbs.
To reduce the chance of OoO, try to unclone the skbs before giving up.
v1 -> v2:
- use avoid skb_copy and fallback to netif_receive_skb - Eric
References
Impacted products
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nveth: ensure skb entering GRO are not cloned.\n\nAfter commit d3256efd8e8b (\"veth: allow enabling NAPI even without XDP\"),\nif GRO is enabled on a veth device and TSO is disabled on the peer\ndevice, TCP skbs will go through the NAPI callback. If there is no XDP\nprogram attached, the veth code does not perform any share check, and\nshared/cloned skbs could enter the GRO engine.\n\nIgnat reported a BUG triggered later-on due to the above condition:\n\n[ 53.970529][ C1] kernel BUG at net/core/skbuff.c:3574!\n[ 53.981755][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\n[ 53.982634][ C1] CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc5+ #25\n[ 53.982634][ C1] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n[ 53.982634][ C1] RIP: 0010:skb_shift+0x13ef/0x23b0\n[ 53.982634][ C1] Code: ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0\n7f 08 84 c0 0f 85 41 0c 00 00 41 80 7f 02 00 4d 8d b5 d0 00 00 00 0f\n85 74 f5 ff ff \u003c0f\u003e 0b 4d 8d 77 20 be 04 00 00 00 4c 89 44 24 78 4c 89\nf7 4c 89 8c\n[ 53.982634][ C1] RSP: 0018:ffff8881008f7008 EFLAGS: 00010246\n[ 53.982634][ C1] RAX: 0000000000000000 RBX: ffff8881180b4c80 RCX: 0000000000000000\n[ 53.982634][ C1] RDX: 0000000000000002 RSI: ffff8881180b4d3c RDI: ffff88810bc9cac2\n[ 53.982634][ C1] RBP: ffff8881008f70b8 R08: ffff8881180b4cf4 R09: ffff8881180b4cf0\n[ 53.982634][ C1] R10: ffffed1022999e5c R11: 0000000000000002 R12: 0000000000000590\n[ 53.982634][ C1] R13: ffff88810f940c80 R14: ffff88810f940d50 R15: ffff88810bc9cac0\n[ 53.982634][ C1] FS: 0000000000000000(0000) GS:ffff888235880000(0000) knlGS:0000000000000000\n[ 53.982634][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 53.982634][ C1] CR2: 00007ff5f9b86680 CR3: 0000000108ce8004 CR4: 0000000000170ee0\n[ 53.982634][ C1] Call Trace:\n[ 53.982634][ C1] \u003cTASK\u003e\n[ 53.982634][ C1] tcp_sacktag_walk+0xaba/0x18e0\n[ 53.982634][ C1] tcp_sacktag_write_queue+0xe7b/0x3460\n[ 53.982634][ C1] tcp_ack+0x2666/0x54b0\n[ 53.982634][ C1] tcp_rcv_established+0x4d9/0x20f0\n[ 53.982634][ C1] tcp_v4_do_rcv+0x551/0x810\n[ 53.982634][ C1] tcp_v4_rcv+0x22ed/0x2ed0\n[ 53.982634][ C1] ip_protocol_deliver_rcu+0x96/0xaf0\n[ 53.982634][ C1] ip_local_deliver_finish+0x1e0/0x2f0\n[ 53.982634][ C1] ip_sublist_rcv_finish+0x211/0x440\n[ 53.982634][ C1] ip_list_rcv_finish.constprop.0+0x424/0x660\n[ 53.982634][ C1] ip_list_rcv+0x2c8/0x410\n[ 53.982634][ C1] __netif_receive_skb_list_core+0x65c/0x910\n[ 53.982634][ C1] netif_receive_skb_list_internal+0x5f9/0xcb0\n[ 53.982634][ C1] napi_complete_done+0x188/0x6e0\n[ 53.982634][ C1] gro_cell_poll+0x10c/0x1d0\n[ 53.982634][ C1] __napi_poll+0xa1/0x530\n[ 53.982634][ C1] net_rx_action+0x567/0x1270\n[ 53.982634][ C1] __do_softirq+0x28a/0x9ba\n[ 53.982634][ C1] run_ksoftirqd+0x32/0x60\n[ 53.982634][ C1] smpboot_thread_fn+0x559/0x8c0\n[ 53.982634][ C1] kthread+0x3b9/0x490\n[ 53.982634][ C1] ret_from_fork+0x22/0x30\n[ 53.982634][ C1] \u003c/TASK\u003e\n\nAddress the issue by skipping the GRO stage for shared or cloned skbs.\nTo reduce the chance of OoO, try to unclone the skbs before giving up.\n\nv1 -\u003e v2:\n - use avoid skb_copy and fallback to netif_receive_skb - Eric"
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cve-2021-47102
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: marvell: prestera: fix incorrect structure access
In line:
upper = info->upper_dev;
We access upper_dev field, which is related only for particular events
(e.g. event == NETDEV_CHANGEUPPER). So, this line cause invalid memory
access for another events,
when ptr is not netdev_notifier_changeupper_info.
The KASAN logs are as follows:
[ 30.123165] BUG: KASAN: stack-out-of-bounds in prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera]
[ 30.133336] Read of size 8 at addr ffff80000cf772b0 by task udevd/778
[ 30.139866]
[ 30.141398] CPU: 0 PID: 778 Comm: udevd Not tainted 5.16.0-rc3 #6
[ 30.147588] Hardware name: DNI AmazonGo1 A7040 board (DT)
[ 30.153056] Call trace:
[ 30.155547] dump_backtrace+0x0/0x2c0
[ 30.159320] show_stack+0x18/0x30
[ 30.162729] dump_stack_lvl+0x68/0x84
[ 30.166491] print_address_description.constprop.0+0x74/0x2b8
[ 30.172346] kasan_report+0x1e8/0x250
[ 30.176102] __asan_load8+0x98/0xe0
[ 30.179682] prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera]
[ 30.186847] prestera_netdev_event_handler+0x1b4/0x1c0 [prestera]
[ 30.193313] raw_notifier_call_chain+0x74/0xa0
[ 30.197860] call_netdevice_notifiers_info+0x68/0xc0
[ 30.202924] register_netdevice+0x3cc/0x760
[ 30.207190] register_netdev+0x24/0x50
[ 30.211015] prestera_device_register+0x8a0/0xba0 [prestera]
References
Impacted products
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cve-2021-47103
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
inet: fully convert sk->sk_rx_dst to RCU rules
syzbot reported various issues around early demux,
one being included in this changelog [1]
sk->sk_rx_dst is using RCU protection without clearly
documenting it.
And following sequences in tcp_v4_do_rcv()/tcp_v6_do_rcv()
are not following standard RCU rules.
[a] dst_release(dst);
[b] sk->sk_rx_dst = NULL;
They look wrong because a delete operation of RCU protected
pointer is supposed to clear the pointer before
the call_rcu()/synchronize_rcu() guarding actual memory freeing.
In some cases indeed, dst could be freed before [b] is done.
We could cheat by clearing sk_rx_dst before calling
dst_release(), but this seems the right time to stick
to standard RCU annotations and debugging facilities.
[1]
BUG: KASAN: use-after-free in dst_check include/net/dst.h:470 [inline]
BUG: KASAN: use-after-free in tcp_v4_early_demux+0x95b/0x960 net/ipv4/tcp_ipv4.c:1792
Read of size 2 at addr ffff88807f1cb73a by task syz-executor.5/9204
CPU: 0 PID: 9204 Comm: syz-executor.5 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247
__kasan_report mm/kasan/report.c:433 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:450
dst_check include/net/dst.h:470 [inline]
tcp_v4_early_demux+0x95b/0x960 net/ipv4/tcp_ipv4.c:1792
ip_rcv_finish_core.constprop.0+0x15de/0x1e80 net/ipv4/ip_input.c:340
ip_list_rcv_finish.constprop.0+0x1b2/0x6e0 net/ipv4/ip_input.c:583
ip_sublist_rcv net/ipv4/ip_input.c:609 [inline]
ip_list_rcv+0x34e/0x490 net/ipv4/ip_input.c:644
__netif_receive_skb_list_ptype net/core/dev.c:5508 [inline]
__netif_receive_skb_list_core+0x549/0x8e0 net/core/dev.c:5556
__netif_receive_skb_list net/core/dev.c:5608 [inline]
netif_receive_skb_list_internal+0x75e/0xd80 net/core/dev.c:5699
gro_normal_list net/core/dev.c:5853 [inline]
gro_normal_list net/core/dev.c:5849 [inline]
napi_complete_done+0x1f1/0x880 net/core/dev.c:6590
virtqueue_napi_complete drivers/net/virtio_net.c:339 [inline]
virtnet_poll+0xca2/0x11b0 drivers/net/virtio_net.c:1557
__napi_poll+0xaf/0x440 net/core/dev.c:7023
napi_poll net/core/dev.c:7090 [inline]
net_rx_action+0x801/0xb40 net/core/dev.c:7177
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0x52/0xc0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0033:0x7f5e972bfd57
Code: 39 d1 73 14 0f 1f 80 00 00 00 00 48 8b 50 f8 48 83 e8 08 48 39 ca 77 f3 48 39 c3 73 3e 48 89 13 48 8b 50 f8 48 89 38 49 8b 0e <48> 8b 3e 48 83 c3 08 48 83 c6 08 eb bc 48 39 d1 72 9e 48 39 d0 73
RSP: 002b:00007fff8a413210 EFLAGS: 00000283
RAX: 00007f5e97108990 RBX: 00007f5e97108338 RCX: ffffffff81d3aa45
RDX: ffffffff81d3aa45 RSI: 00007f5e97108340 RDI: ffffffff81d3aa45
RBP: 00007f5e97107eb8 R08: 00007f5e97108d88 R09: 0000000093c2e8d9
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f5e97107eb0
R13: 00007f5e97108338 R14: 00007f5e97107ea8 R15: 0000000000000019
</TASK>
Allocated by task 13:
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3234 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc+0x202/0x3a0 mm/slub.c:3247
dst_alloc+0x146/0x1f0 net/core/dst.c:92
rt_dst_alloc+0x73/0x430 net/ipv4/route.c:1613
ip_route_input_slow+0x1817/0x3a20 net/ipv4/route.c:234
---truncated---
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 Version: 41063e9dd11956f2d285e12e4342e1d232ba0ea2 |
||||
|
|||||||
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cve-2021-47096
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ALSA: rawmidi - fix the uninitalized user_pversion
The user_pversion was uninitialized for the user space file structure
in the open function, because the file private structure use
kmalloc for the allocation.
The kernel ALSA sequencer code clears the file structure, so no additional
fixes are required.
BugLink: https://github.com/alsa-project/alsa-lib/issues/178
References
Impacted products
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cve-2021-47098
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations
Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer underflows of
temperature calculations") addressed a number of underflow situations
when writing temperature limits. However, it missed one situation, seen
when an attempt is made to set the hysteresis value to MAX_LONG and the
critical temperature limit is negative.
Use clamp_val() when setting the hysteresis temperature to ensure that
the provided value can never overflow or underflow.
References
Impacted products
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cve-2021-47092
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Always clear vmx->fail on emulation_required
Revert a relatively recent change that set vmx->fail if the vCPU is in L2
and emulation_required is true, as that behavior is completely bogus.
Setting vmx->fail and synthesizing a VM-Exit is contradictory and wrong:
(a) it's impossible to have both a VM-Fail and VM-Exit
(b) vmcs.EXIT_REASON is not modified on VM-Fail
(c) emulation_required refers to guest state and guest state checks are
always VM-Exits, not VM-Fails.
For KVM specifically, emulation_required is handled before nested exits
in __vmx_handle_exit(), thus setting vmx->fail has no immediate effect,
i.e. KVM calls into handle_invalid_guest_state() and vmx->fail is ignored.
Setting vmx->fail can ultimately result in a WARN in nested_vmx_vmexit()
firing when tearing down the VM as KVM never expects vmx->fail to be set
when L2 is active, KVM always reflects those errors into L1.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 21158 at arch/x86/kvm/vmx/nested.c:4548
nested_vmx_vmexit+0x16bd/0x17e0
arch/x86/kvm/vmx/nested.c:4547
Modules linked in:
CPU: 0 PID: 21158 Comm: syz-executor.1 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nested_vmx_vmexit+0x16bd/0x17e0 arch/x86/kvm/vmx/nested.c:4547
Code: <0f> 0b e9 2e f8 ff ff e8 57 b3 5d 00 0f 0b e9 00 f1 ff ff 89 e9 80
Call Trace:
vmx_leave_nested arch/x86/kvm/vmx/nested.c:6220 [inline]
nested_vmx_free_vcpu+0x83/0xc0 arch/x86/kvm/vmx/nested.c:330
vmx_free_vcpu+0x11f/0x2a0 arch/x86/kvm/vmx/vmx.c:6799
kvm_arch_vcpu_destroy+0x6b/0x240 arch/x86/kvm/x86.c:10989
kvm_vcpu_destroy+0x29/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:441
kvm_free_vcpus arch/x86/kvm/x86.c:11426 [inline]
kvm_arch_destroy_vm+0x3ef/0x6b0 arch/x86/kvm/x86.c:11545
kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1189 [inline]
kvm_put_kvm+0x751/0xe40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1220
kvm_vcpu_release+0x53/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3489
__fput+0x3fc/0x870 fs/file_table.c:280
task_work_run+0x146/0x1c0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0x705/0x24f0 kernel/exit.c:832
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
References
Impacted products
{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Always clear vmx-\u003efail on emulation_required\n\nRevert a relatively recent change that set vmx-\u003efail if the vCPU is in L2\nand emulation_required is true, as that behavior is completely bogus.\nSetting vmx-\u003efail and synthesizing a VM-Exit is contradictory and wrong:\n\n (a) it\u0027s impossible to have both a VM-Fail and VM-Exit\n (b) vmcs.EXIT_REASON is not modified on VM-Fail\n (c) emulation_required refers to guest state and guest state checks are\n always VM-Exits, not VM-Fails.\n\nFor KVM specifically, emulation_required is handled before nested exits\nin __vmx_handle_exit(), thus setting vmx-\u003efail has no immediate effect,\ni.e. KVM calls into handle_invalid_guest_state() and vmx-\u003efail is ignored.\nSetting vmx-\u003efail can ultimately result in a WARN in nested_vmx_vmexit()\nfiring when tearing down the VM as KVM never expects vmx-\u003efail to be set\nwhen L2 is active, KVM always reflects those errors into L1.\n\n ------------[ cut here ]------------\n WARNING: CPU: 0 PID: 21158 at arch/x86/kvm/vmx/nested.c:4548\n nested_vmx_vmexit+0x16bd/0x17e0\n arch/x86/kvm/vmx/nested.c:4547\n Modules linked in:\n CPU: 0 PID: 21158 Comm: syz-executor.1 Not tainted 5.16.0-rc3-syzkaller #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n RIP: 0010:nested_vmx_vmexit+0x16bd/0x17e0 arch/x86/kvm/vmx/nested.c:4547\n Code: \u003c0f\u003e 0b e9 2e f8 ff ff e8 57 b3 5d 00 0f 0b e9 00 f1 ff ff 89 e9 80\n Call Trace:\n vmx_leave_nested arch/x86/kvm/vmx/nested.c:6220 [inline]\n nested_vmx_free_vcpu+0x83/0xc0 arch/x86/kvm/vmx/nested.c:330\n vmx_free_vcpu+0x11f/0x2a0 arch/x86/kvm/vmx/vmx.c:6799\n kvm_arch_vcpu_destroy+0x6b/0x240 arch/x86/kvm/x86.c:10989\n kvm_vcpu_destroy+0x29/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:441\n kvm_free_vcpus arch/x86/kvm/x86.c:11426 [inline]\n kvm_arch_destroy_vm+0x3ef/0x6b0 arch/x86/kvm/x86.c:11545\n kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1189 [inline]\n kvm_put_kvm+0x751/0xe40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1220\n kvm_vcpu_release+0x53/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3489\n __fput+0x3fc/0x870 fs/file_table.c:280\n task_work_run+0x146/0x1c0 kernel/task_work.c:164\n exit_task_work include/linux/task_work.h:32 [inline]\n do_exit+0x705/0x24f0 kernel/exit.c:832\n do_group_exit+0x168/0x2d0 kernel/exit.c:929\n get_signal+0x1740/0x2120 kernel/signal.c:2852\n arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868\n handle_signal_work kernel/entry/common.c:148 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:172 [inline]\n exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207\n __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]\n syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300\n do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x44/0xae"
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"cveMetadata": {
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"datePublished": "2024-03-04T18:10:40.037Z",
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cve-2021-47089
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
kfence: fix memory leak when cat kfence objects
Hulk robot reported a kmemleak problem:
unreferenced object 0xffff93d1d8cc02e8 (size 248):
comm "cat", pid 23327, jiffies 4624670141 (age 495992.217s)
hex dump (first 32 bytes):
00 40 85 19 d4 93 ff ff 00 10 00 00 00 00 00 00 .@..............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
seq_open+0x2a/0x80
full_proxy_open+0x167/0x1e0
do_dentry_open+0x1e1/0x3a0
path_openat+0x961/0xa20
do_filp_open+0xae/0x120
do_sys_openat2+0x216/0x2f0
do_sys_open+0x57/0x80
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
unreferenced object 0xffff93d419854000 (size 4096):
comm "cat", pid 23327, jiffies 4624670141 (age 495992.217s)
hex dump (first 32 bytes):
6b 66 65 6e 63 65 2d 23 32 35 30 3a 20 30 78 30 kfence-#250: 0x0
30 30 30 30 30 30 30 37 35 34 62 64 61 31 32 2d 0000000754bda12-
backtrace:
seq_read_iter+0x313/0x440
seq_read+0x14b/0x1a0
full_proxy_read+0x56/0x80
vfs_read+0xa5/0x1b0
ksys_read+0xa0/0xf0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
I find that we can easily reproduce this problem with the following
commands:
cat /sys/kernel/debug/kfence/objects
echo scan > /sys/kernel/debug/kmemleak
cat /sys/kernel/debug/kmemleak
The leaked memory is allocated in the stack below:
do_syscall_64
do_sys_open
do_dentry_open
full_proxy_open
seq_open ---> alloc seq_file
vfs_read
full_proxy_read
seq_read
seq_read_iter
traverse ---> alloc seq_buf
And it should have been released in the following process:
do_syscall_64
syscall_exit_to_user_mode
exit_to_user_mode_prepare
task_work_run
____fput
__fput
full_proxy_release ---> free here
However, the release function corresponding to file_operations is not
implemented in kfence. As a result, a memory leak occurs. Therefore,
the solution to this problem is to implement the corresponding release
function.
References
Impacted products
{
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"metrics": [
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"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"options": [
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"timestamp": "2024-10-31T13:23:25.318113Z",
"version": "2.0.3"
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}
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"providerMetadata": {
"dateUpdated": "2024-10-31T13:28:13.519Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
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"dateUpdated": "2024-08-04T05:24:39.939Z",
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"versions": [
{
"status": "affected",
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},
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"lessThan": "5.12",
"status": "unaffected",
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkfence: fix memory leak when cat kfence objects\n\nHulk robot reported a kmemleak problem:\n\n unreferenced object 0xffff93d1d8cc02e8 (size 248):\n comm \"cat\", pid 23327, jiffies 4624670141 (age 495992.217s)\n hex dump (first 32 bytes):\n 00 40 85 19 d4 93 ff ff 00 10 00 00 00 00 00 00 .@..............\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n seq_open+0x2a/0x80\n full_proxy_open+0x167/0x1e0\n do_dentry_open+0x1e1/0x3a0\n path_openat+0x961/0xa20\n do_filp_open+0xae/0x120\n do_sys_openat2+0x216/0x2f0\n do_sys_open+0x57/0x80\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n unreferenced object 0xffff93d419854000 (size 4096):\n comm \"cat\", pid 23327, jiffies 4624670141 (age 495992.217s)\n hex dump (first 32 bytes):\n 6b 66 65 6e 63 65 2d 23 32 35 30 3a 20 30 78 30 kfence-#250: 0x0\n 30 30 30 30 30 30 30 37 35 34 62 64 61 31 32 2d 0000000754bda12-\n backtrace:\n seq_read_iter+0x313/0x440\n seq_read+0x14b/0x1a0\n full_proxy_read+0x56/0x80\n vfs_read+0xa5/0x1b0\n ksys_read+0xa0/0xf0\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nI find that we can easily reproduce this problem with the following\ncommands:\n\n\tcat /sys/kernel/debug/kfence/objects\n\techo scan \u003e /sys/kernel/debug/kmemleak\n\tcat /sys/kernel/debug/kmemleak\n\nThe leaked memory is allocated in the stack below:\n\n do_syscall_64\n do_sys_open\n do_dentry_open\n full_proxy_open\n seq_open ---\u003e alloc seq_file\n vfs_read\n full_proxy_read\n seq_read\n seq_read_iter\n traverse ---\u003e alloc seq_buf\n\nAnd it should have been released in the following process:\n\n do_syscall_64\n syscall_exit_to_user_mode\n exit_to_user_mode_prepare\n task_work_run\n ____fput\n __fput\n full_proxy_release ---\u003e free here\n\nHowever, the release function corresponding to file_operations is not\nimplemented in kfence. As a result, a memory leak occurs. Therefore,\nthe solution to this problem is to implement the corresponding release\nfunction."
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"url": "https://git.kernel.org/stable/c/0129ab1f268b6cf88825eae819b9b84aa0a85634"
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"title": "kfence: fix memory leak when cat kfence objects",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"datePublished": "2024-03-04T18:10:27.495Z",
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cve-2021-47097
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Input: elantech - fix stack out of bound access in elantech_change_report_id()
The array param[] in elantech_change_report_id() must be at least 3
bytes, because elantech_read_reg_params() is calling ps2_command() with
PSMOUSE_CMD_GETINFO, that is going to access 3 bytes from param[], but
it's defined in the stack as an array of 2 bytes, therefore we have a
potential stack out-of-bounds access here, also confirmed by KASAN:
[ 6.512374] BUG: KASAN: stack-out-of-bounds in __ps2_command+0x372/0x7e0
[ 6.512397] Read of size 1 at addr ffff8881024d77c2 by task kworker/2:1/118
[ 6.512416] CPU: 2 PID: 118 Comm: kworker/2:1 Not tainted 5.13.0-22-generic #22+arighi20211110
[ 6.512428] Hardware name: LENOVO 20T8000QGE/20T8000QGE, BIOS R1AET32W (1.08 ) 08/14/2020
[ 6.512436] Workqueue: events_long serio_handle_event
[ 6.512453] Call Trace:
[ 6.512462] show_stack+0x52/0x58
[ 6.512474] dump_stack+0xa1/0xd3
[ 6.512487] print_address_description.constprop.0+0x1d/0x140
[ 6.512502] ? __ps2_command+0x372/0x7e0
[ 6.512516] __kasan_report.cold+0x7d/0x112
[ 6.512527] ? _raw_write_lock_irq+0x20/0xd0
[ 6.512539] ? __ps2_command+0x372/0x7e0
[ 6.512552] kasan_report+0x3c/0x50
[ 6.512564] __asan_load1+0x6a/0x70
[ 6.512575] __ps2_command+0x372/0x7e0
[ 6.512589] ? ps2_drain+0x240/0x240
[ 6.512601] ? dev_printk_emit+0xa2/0xd3
[ 6.512612] ? dev_vprintk_emit+0xc5/0xc5
[ 6.512621] ? __kasan_check_write+0x14/0x20
[ 6.512634] ? mutex_lock+0x8f/0xe0
[ 6.512643] ? __mutex_lock_slowpath+0x20/0x20
[ 6.512655] ps2_command+0x52/0x90
[ 6.512670] elantech_ps2_command+0x4f/0xc0 [psmouse]
[ 6.512734] elantech_change_report_id+0x1e6/0x256 [psmouse]
[ 6.512799] ? elantech_report_trackpoint.constprop.0.cold+0xd/0xd [psmouse]
[ 6.512863] ? ps2_command+0x7f/0x90
[ 6.512877] elantech_query_info.cold+0x6bd/0x9ed [psmouse]
[ 6.512943] ? elantech_setup_ps2+0x460/0x460 [psmouse]
[ 6.513005] ? psmouse_reset+0x69/0xb0 [psmouse]
[ 6.513064] ? psmouse_attr_set_helper+0x2a0/0x2a0 [psmouse]
[ 6.513122] ? phys_pmd_init+0x30e/0x521
[ 6.513137] elantech_init+0x8a/0x200 [psmouse]
[ 6.513200] ? elantech_init_ps2+0xf0/0xf0 [psmouse]
[ 6.513249] ? elantech_query_info+0x440/0x440 [psmouse]
[ 6.513296] ? synaptics_send_cmd+0x60/0x60 [psmouse]
[ 6.513342] ? elantech_query_info+0x440/0x440 [psmouse]
[ 6.513388] ? psmouse_try_protocol+0x11e/0x170 [psmouse]
[ 6.513432] psmouse_extensions+0x65d/0x6e0 [psmouse]
[ 6.513476] ? psmouse_try_protocol+0x170/0x170 [psmouse]
[ 6.513519] ? mutex_unlock+0x22/0x40
[ 6.513526] ? ps2_command+0x7f/0x90
[ 6.513536] ? psmouse_probe+0xa3/0xf0 [psmouse]
[ 6.513580] psmouse_switch_protocol+0x27d/0x2e0 [psmouse]
[ 6.513624] psmouse_connect+0x272/0x530 [psmouse]
[ 6.513669] serio_driver_probe+0x55/0x70
[ 6.513679] really_probe+0x190/0x720
[ 6.513689] driver_probe_device+0x160/0x1f0
[ 6.513697] device_driver_attach+0x119/0x130
[ 6.513705] ? device_driver_attach+0x130/0x130
[ 6.513713] __driver_attach+0xe7/0x1a0
[ 6.513720] ? device_driver_attach+0x130/0x130
[ 6.513728] bus_for_each_dev+0xfb/0x150
[ 6.513738] ? subsys_dev_iter_exit+0x10/0x10
[ 6.513748] ? _raw_write_unlock_bh+0x30/0x30
[ 6.513757] driver_attach+0x2d/0x40
[ 6.513764] serio_handle_event+0x199/0x3d0
[ 6.513775] process_one_work+0x471/0x740
[ 6.513785] worker_thread+0x2d2/0x790
[ 6.513794] ? process_one_work+0x740/0x740
[ 6.513802] kthread+0x1b4/0x1e0
[ 6.513809] ? set_kthread_struct+0x80/0x80
[ 6.513816] ret_from_fork+0x22/0x30
[ 6.513832] The buggy address belongs to the page:
[ 6.513838] page:00000000bc35e189 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1024d7
[ 6.513847] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)
[ 6.513860] raw: 0
---truncated---
References
Impacted products
{
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"id": "CVE-2021-47097",
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
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{
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"product": "Linux",
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"drivers/input/mouse/elantech.c"
],
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{
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{
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"programFiles": [
"drivers/input/mouse/elantech.c"
],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.4.169",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.10.89",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.15.12",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.16",
"versionType": "original_commit_for_fix"
}
]
}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: elantech - fix stack out of bound access in elantech_change_report_id()\n\nThe array param[] in elantech_change_report_id() must be at least 3\nbytes, because elantech_read_reg_params() is calling ps2_command() with\nPSMOUSE_CMD_GETINFO, that is going to access 3 bytes from param[], but\nit\u0027s defined in the stack as an array of 2 bytes, therefore we have a\npotential stack out-of-bounds access here, also confirmed by KASAN:\n\n[ 6.512374] BUG: KASAN: stack-out-of-bounds in __ps2_command+0x372/0x7e0\n[ 6.512397] Read of size 1 at addr ffff8881024d77c2 by task kworker/2:1/118\n\n[ 6.512416] CPU: 2 PID: 118 Comm: kworker/2:1 Not tainted 5.13.0-22-generic #22+arighi20211110\n[ 6.512428] Hardware name: LENOVO 20T8000QGE/20T8000QGE, BIOS R1AET32W (1.08 ) 08/14/2020\n[ 6.512436] Workqueue: events_long serio_handle_event\n[ 6.512453] Call Trace:\n[ 6.512462] show_stack+0x52/0x58\n[ 6.512474] dump_stack+0xa1/0xd3\n[ 6.512487] print_address_description.constprop.0+0x1d/0x140\n[ 6.512502] ? __ps2_command+0x372/0x7e0\n[ 6.512516] __kasan_report.cold+0x7d/0x112\n[ 6.512527] ? _raw_write_lock_irq+0x20/0xd0\n[ 6.512539] ? __ps2_command+0x372/0x7e0\n[ 6.512552] kasan_report+0x3c/0x50\n[ 6.512564] __asan_load1+0x6a/0x70\n[ 6.512575] __ps2_command+0x372/0x7e0\n[ 6.512589] ? ps2_drain+0x240/0x240\n[ 6.512601] ? dev_printk_emit+0xa2/0xd3\n[ 6.512612] ? dev_vprintk_emit+0xc5/0xc5\n[ 6.512621] ? __kasan_check_write+0x14/0x20\n[ 6.512634] ? mutex_lock+0x8f/0xe0\n[ 6.512643] ? __mutex_lock_slowpath+0x20/0x20\n[ 6.512655] ps2_command+0x52/0x90\n[ 6.512670] elantech_ps2_command+0x4f/0xc0 [psmouse]\n[ 6.512734] elantech_change_report_id+0x1e6/0x256 [psmouse]\n[ 6.512799] ? elantech_report_trackpoint.constprop.0.cold+0xd/0xd [psmouse]\n[ 6.512863] ? ps2_command+0x7f/0x90\n[ 6.512877] elantech_query_info.cold+0x6bd/0x9ed [psmouse]\n[ 6.512943] ? elantech_setup_ps2+0x460/0x460 [psmouse]\n[ 6.513005] ? psmouse_reset+0x69/0xb0 [psmouse]\n[ 6.513064] ? psmouse_attr_set_helper+0x2a0/0x2a0 [psmouse]\n[ 6.513122] ? phys_pmd_init+0x30e/0x521\n[ 6.513137] elantech_init+0x8a/0x200 [psmouse]\n[ 6.513200] ? elantech_init_ps2+0xf0/0xf0 [psmouse]\n[ 6.513249] ? elantech_query_info+0x440/0x440 [psmouse]\n[ 6.513296] ? synaptics_send_cmd+0x60/0x60 [psmouse]\n[ 6.513342] ? elantech_query_info+0x440/0x440 [psmouse]\n[ 6.513388] ? psmouse_try_protocol+0x11e/0x170 [psmouse]\n[ 6.513432] psmouse_extensions+0x65d/0x6e0 [psmouse]\n[ 6.513476] ? psmouse_try_protocol+0x170/0x170 [psmouse]\n[ 6.513519] ? mutex_unlock+0x22/0x40\n[ 6.513526] ? ps2_command+0x7f/0x90\n[ 6.513536] ? psmouse_probe+0xa3/0xf0 [psmouse]\n[ 6.513580] psmouse_switch_protocol+0x27d/0x2e0 [psmouse]\n[ 6.513624] psmouse_connect+0x272/0x530 [psmouse]\n[ 6.513669] serio_driver_probe+0x55/0x70\n[ 6.513679] really_probe+0x190/0x720\n[ 6.513689] driver_probe_device+0x160/0x1f0\n[ 6.513697] device_driver_attach+0x119/0x130\n[ 6.513705] ? device_driver_attach+0x130/0x130\n[ 6.513713] __driver_attach+0xe7/0x1a0\n[ 6.513720] ? device_driver_attach+0x130/0x130\n[ 6.513728] bus_for_each_dev+0xfb/0x150\n[ 6.513738] ? subsys_dev_iter_exit+0x10/0x10\n[ 6.513748] ? _raw_write_unlock_bh+0x30/0x30\n[ 6.513757] driver_attach+0x2d/0x40\n[ 6.513764] serio_handle_event+0x199/0x3d0\n[ 6.513775] process_one_work+0x471/0x740\n[ 6.513785] worker_thread+0x2d2/0x790\n[ 6.513794] ? process_one_work+0x740/0x740\n[ 6.513802] kthread+0x1b4/0x1e0\n[ 6.513809] ? set_kthread_struct+0x80/0x80\n[ 6.513816] ret_from_fork+0x22/0x30\n\n[ 6.513832] The buggy address belongs to the page:\n[ 6.513838] page:00000000bc35e189 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1024d7\n[ 6.513847] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)\n[ 6.513860] raw: 0\n---truncated---"
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"url": "https://git.kernel.org/stable/c/1d72d9f960ccf1052a0630a68c3d358791dbdaaa"
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"title": "Input: elantech - fix stack out of bound access in elantech_change_report_id()",
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"assignerShortName": "Linux",
"cveId": "CVE-2021-47097",
"datePublished": "2024-03-04T18:10:49.194Z",
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cve-2021-47088
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:34
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/dbgfs: protect targets destructions with kdamond_lock
DAMON debugfs interface iterates current monitoring targets in
'dbgfs_target_ids_read()' while holding the corresponding
'kdamond_lock'. However, it also destructs the monitoring targets in
'dbgfs_before_terminate()' without holding the lock. This can result in
a use_after_free bug. This commit avoids the race by protecting the
destruction with the corresponding 'kdamond_lock'.
References
Impacted products
{
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"timestamp": "2024-09-10T15:56:11.291300Z",
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"title": "CISA ADP Vulnrichment"
}
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"vendor": "Linux",
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"lessThan": "5.15",
"status": "unaffected",
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"status": "unaffected",
"version": "5.15.12",
"versionType": "semver"
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"status": "unaffected",
"version": "5.16",
"versionType": "original_commit_for_fix"
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"title": "mm/damon/dbgfs: protect targets destructions with kdamond_lock",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
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"assignerShortName": "Linux",
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"datePublished": "2024-03-04T18:10:26.511Z",
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"dateUpdated": "2024-12-19T07:34:59.589Z",
"state": "PUBLISHED"
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cve-2021-47095
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipmi: ssif: initialize ssif_info->client early
During probe ssif_info->client is dereferenced in error path. However,
it is set when some of the error checking has already been done. This
causes following kernel crash if an error path is taken:
[ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present
[ 30.657616][ T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088
...
[ 30.657723][ T674] pc : __dev_printk+0x28/0xa0
[ 30.657732][ T674] lr : _dev_err+0x7c/0xa0
...
[ 30.657772][ T674] Call trace:
[ 30.657775][ T674] __dev_printk+0x28/0xa0
[ 30.657778][ T674] _dev_err+0x7c/0xa0
[ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]
[ 30.657791][ T674] i2c_device_probe+0x37c/0x3c0
...
Initialize ssif_info->client before any error path can be taken. Clear
i2c_client data in the error path to prevent the dangling pointer from
leaking.
References
Impacted products
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"product": "Linux",
"programFiles": [
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"version": "c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c",
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cve-2021-47105
Vulnerability from cvelistv5
Published
2024-03-04 18:15
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ice: xsk: return xsk buffers back to pool when cleaning the ring
Currently we only NULL the xdp_buff pointer in the internal SW ring but
we never give it back to the xsk buffer pool. This means that buffers
can be leaked out of the buff pool and never be used again.
Add missing xsk_buff_free() call to the routine that is supposed to
clean the entries that are left in the ring so that these buffers in the
umem can be used by other sockets.
Also, only go through the space that is actually left to be cleaned
instead of a whole ring.
References
Impacted products
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cve-2021-47085
Vulnerability from cvelistv5
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
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cve-2021-47104
Vulnerability from cvelistv5
Published
2024-03-04 18:15
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
IB/qib: Fix memory leak in qib_user_sdma_queue_pkts()
The wrong goto label was used for the error case and missed cleanup of the
pkt allocation.
Addresses-Coverity-ID: 1493352 ("Resource leak")
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: bda41654b6e0c125a624ca35d6d20beb8015b5d0 Version: 3f57c3f67fd93b4da86aeffea1ca32c484d054ad Version: 60833707b968d5ae02a75edb7886dcd4a957cf0d Version: 73d2892148aa4397a885b4f4afcfc5b27a325c42 Version: 0f8cdfff06829a0b0348b6debc29ff6a61967724 Version: c3e17e58f571f34c51aeb17274ed02c2ed5cf780 Version: d39bf40e55e666b5905fdbd46a0dced030ce87be Version: d39bf40e55e666b5905fdbd46a0dced030ce87be |
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cve-2021-47082
Vulnerability from cvelistv5
Published
2024-03-04 18:06
Modified
2024-12-19 07:34
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
tun: avoid double free in tun_free_netdev
Avoid double free in tun_free_netdev() by moving the
dev->tstats and tun->security allocs to a new ndo_init routine
(tun_net_init()) that will be called by register_netdevice().
ndo_init is paired with the desctructor (tun_free_netdev()),
so if there's an error in register_netdevice() the destructor
will handle the frees.
BUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605
CPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1
Hardware name: Red Hat KVM, BIOS
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106
print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247
kasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372
____kasan_slab_free mm/kasan/common.c:346 [inline]
__kasan_slab_free+0x107/0x120 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook mm/slub.c:1749 [inline]
slab_free mm/slub.c:3513 [inline]
kfree+0xac/0x2d0 mm/slub.c:4561
selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605
security_tun_dev_free_security+0x4f/0x90 security/security.c:2342
tun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215
netdev_run_todo+0x4df/0x840 net/core/dev.c:10627
rtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112
__tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302
tun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
References
Impacted products
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"dateReserved": "2024-02-29T22:33:44.298Z",
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cve-2021-47106
Vulnerability from cvelistv5
Published
2024-03-04 18:15
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()
We need to use list_for_each_entry_safe() iterator
because we can not access @catchall after kfree_rcu() call.
syzbot reported:
BUG: KASAN: use-after-free in nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]
BUG: KASAN: use-after-free in nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]
BUG: KASAN: use-after-free in nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493
Read of size 8 at addr ffff8880716e5b80 by task syz-executor.3/8871
CPU: 1 PID: 8871 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x8d/0x2ed mm/kasan/report.c:247
__kasan_report mm/kasan/report.c:433 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:450
nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]
nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]
nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493
__nft_release_table+0x79f/0xcd0 net/netfilter/nf_tables_api.c:9626
nft_rcv_nl_event+0x4f8/0x670 net/netfilter/nf_tables_api.c:9688
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
blocking_notifier_call_chain kernel/notifier.c:318 [inline]
blocking_notifier_call_chain+0x67/0x90 kernel/notifier.c:306
netlink_release+0xcb6/0x1dd0 net/netlink/af_netlink.c:788
__sock_release+0xcd/0x280 net/socket.c:649
sock_close+0x18/0x20 net/socket.c:1314
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f75fbf28adb
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffd8da7ec10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f75fbf28adb
RDX: 00007f75fc08e828 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f75fc08a960 R08: 0000000000000000 R09: 00007f75fc08e830
R10: 00007ffd8da7ed10 R11: 0000000000000293 R12: 00000000002067c3
R13: 00007ffd8da7ed10 R14: 00007f75fc088f60 R15: 0000000000000032
</TASK>
Allocated by task 8886:
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:269 [inline]
kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575
kmalloc include/linux/slab.h:590 [inline]
nft_setelem_catchall_insert net/netfilter/nf_tables_api.c:5544 [inline]
nft_setelem_insert net/netfilter/nf_tables_api.c:5562 [inline]
nft_add_set_elem+0x232e/0x2f40 net/netfilter/nf_tables_api.c:5936
nf_tables_newsetelem+0x6ff/0xbb0 net/netfilter/nf_tables_api.c:6032
nfnetlink_rcv_batch+0x1710/0x25f0 net/netfilter/nfnetlink.c:513
nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:634 [inline]
nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:652
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/
---truncated---
References
Impacted products
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cve-2021-47086
Vulnerability from cvelistv5
Published
2024-03-04 18:06
Modified
2024-12-19 07:34
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
phonet/pep: refuse to enable an unbound pipe
This ioctl() implicitly assumed that the socket was already bound to
a valid local socket name, i.e. Phonet object. If the socket was not
bound, two separate problems would occur:
1) We'd send an pipe enablement request with an invalid source object.
2) Later socket calls could BUG on the socket unexpectedly being
connected yet not bound to a valid object.
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||||
|
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cve-2021-47100
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
Hi,
When testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,
the system crashed.
The log as follows:
[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a
[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0
[ 141.087464] Oops: 0010 [#1] SMP NOPTI
[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47
[ 141.088009] Workqueue: events 0xffffffffc09b3a40
[ 141.088009] RIP: 0010:0xffffffffc09b3a5a
[ 141.088009] Code: Bad RIP value.
[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246
[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000
[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1
[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700
[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8
[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000
[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0
[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 141.088009] PKRU: 55555554
[ 141.088009] Call Trace:
[ 141.088009] ? process_one_work+0x195/0x390
[ 141.088009] ? worker_thread+0x30/0x390
[ 141.088009] ? process_one_work+0x390/0x390
[ 141.088009] ? kthread+0x10d/0x130
[ 141.088009] ? kthread_flush_work_fn+0x10/0x10
[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a
[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0
[ 200.223464] Oops: 0010 [#1] SMP NOPTI
[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46
[ 200.224008] Workqueue: events 0xffffffffc0b28a40
[ 200.224008] RIP: 0010:0xffffffffc0b28a5a
[ 200.224008] Code: Bad RIP value.
[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246
[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000
[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5
[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700
[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8
[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000
[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0
[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 200.224008] PKRU: 55555554
[ 200.224008] Call Trace:
[ 200.224008] ? process_one_work+0x195/0x390
[ 200.224008] ? worker_thread+0x30/0x390
[ 200.224008] ? process_one_work+0x390/0x390
[ 200.224008] ? kthread+0x10d/0x130
[ 200.224008] ? kthread_flush_work_fn+0x10/0x10
[ 200.224008] ? ret_from_fork+0x35/0x40
[ 200.224008] kernel fault(0x1) notification starting on CPU 63
[ 200.224008] kernel fault(0x1) notification finished on CPU 63
[ 200.224008] CR2: ffffffffc0b28a5a
[ 200.224008] ---[ end trace c82a412d93f57412 ]---
The reason is as follows:
T1: rmmod ipmi_si.
->ipmi_unregister_smi()
-> ipmi_bmc_unregister()
-> __ipmi_bmc_unregister()
-> kref_put(&bmc->usecount, cleanup_bmc_device);
-> schedule_work(&bmc->remove_work);
T2: rmmod ipmi_msghandl
---truncated---
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: b2cfd8ab4add53c2070367bfee2f5b738f51698d Version: b2cfd8ab4add53c2070367bfee2f5b738f51698d Version: b2cfd8ab4add53c2070367bfee2f5b738f51698d Version: b2cfd8ab4add53c2070367bfee2f5b738f51698d Version: b2cfd8ab4add53c2070367bfee2f5b738f51698d |
||||
|
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\n\nHi,\n\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\n\nThe log as follows:\n[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[ 141.087464] Oops: 0010 [#1] SMP NOPTI\n[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[ 141.088009] Workqueue: events 0xffffffffc09b3a40\n[ 141.088009] RIP: 0010:0xffffffffc09b3a5a\n[ 141.088009] Code: Bad RIP value.\n[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 141.088009] PKRU: 55555554\n[ 141.088009] Call Trace:\n[ 141.088009] ? process_one_work+0x195/0x390\n[ 141.088009] ? worker_thread+0x30/0x390\n[ 141.088009] ? process_one_work+0x390/0x390\n[ 141.088009] ? kthread+0x10d/0x130\n[ 141.088009] ? kthread_flush_work_fn+0x10/0x10\n[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[ 200.223464] Oops: 0010 [#1] SMP NOPTI\n[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[ 200.224008] Workqueue: events 0xffffffffc0b28a40\n[ 200.224008] RIP: 0010:0xffffffffc0b28a5a\n[ 200.224008] Code: Bad RIP value.\n[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 200.224008] PKRU: 55555554\n[ 200.224008] Call Trace:\n[ 200.224008] ? process_one_work+0x195/0x390\n[ 200.224008] ? worker_thread+0x30/0x390\n[ 200.224008] ? process_one_work+0x390/0x390\n[ 200.224008] ? kthread+0x10d/0x130\n[ 200.224008] ? kthread_flush_work_fn+0x10/0x10\n[ 200.224008] ? ret_from_fork+0x35/0x40\n[ 200.224008] kernel fault(0x1) notification starting on CPU 63\n[ 200.224008] kernel fault(0x1) notification finished on CPU 63\n[ 200.224008] CR2: ffffffffc0b28a5a\n[ 200.224008] ---[ end trace c82a412d93f57412 ]---\n\nThe reason is as follows:\nT1: rmmod ipmi_si.\n -\u003eipmi_unregister_smi()\n -\u003e ipmi_bmc_unregister()\n -\u003e __ipmi_bmc_unregister()\n -\u003e kref_put(\u0026bmc-\u003eusecount, cleanup_bmc_device);\n -\u003e schedule_work(\u0026bmc-\u003eremove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"
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cve-2021-47094
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86/mmu: Don't advance iterator after restart due to yielding
After dropping mmu_lock in the TDP MMU, restart the iterator during
tdp_iter_next() and do not advance the iterator. Advancing the iterator
results in skipping the top-level SPTE and all its children, which is
fatal if any of the skipped SPTEs were not visited before yielding.
When zapping all SPTEs, i.e. when min_level == root_level, restarting the
iter and then invoking tdp_iter_next() is always fatal if the current gfn
has as a valid SPTE, as advancing the iterator results in try_step_side()
skipping the current gfn, which wasn't visited before yielding.
Sprinkle WARNs on iter->yielded being true in various helpers that are
often used in conjunction with yielding, and tag the helper with
__must_check to reduce the probabily of improper usage.
Failing to zap a top-level SPTE manifests in one of two ways. If a valid
SPTE is skipped by both kvm_tdp_mmu_zap_all() and kvm_tdp_mmu_put_root(),
the shadow page will be leaked and KVM will WARN accordingly.
WARNING: CPU: 1 PID: 3509 at arch/x86/kvm/mmu/tdp_mmu.c:46 [kvm]
RIP: 0010:kvm_mmu_uninit_tdp_mmu+0x3e/0x50 [kvm]
Call Trace:
<TASK>
kvm_arch_destroy_vm+0x130/0x1b0 [kvm]
kvm_destroy_vm+0x162/0x2a0 [kvm]
kvm_vcpu_release+0x34/0x60 [kvm]
__fput+0x82/0x240
task_work_run+0x5c/0x90
do_exit+0x364/0xa10
? futex_unqueue+0x38/0x60
do_group_exit+0x33/0xa0
get_signal+0x155/0x850
arch_do_signal_or_restart+0xed/0x750
exit_to_user_mode_prepare+0xc5/0x120
syscall_exit_to_user_mode+0x1d/0x40
do_syscall_64+0x48/0xc0
entry_SYSCALL_64_after_hwframe+0x44/0xae
If kvm_tdp_mmu_zap_all() skips a gfn/SPTE but that SPTE is then zapped by
kvm_tdp_mmu_put_root(), KVM triggers a use-after-free in the form of
marking a struct page as dirty/accessed after it has been put back on the
free list. This directly triggers a WARN due to encountering a page with
page_count() == 0, but it can also lead to data corruption and additional
errors in the kernel.
WARNING: CPU: 7 PID: 1995658 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:171
RIP: 0010:kvm_is_zone_device_pfn.part.0+0x9e/0xd0 [kvm]
Call Trace:
<TASK>
kvm_set_pfn_dirty+0x120/0x1d0 [kvm]
__handle_changed_spte+0x92e/0xca0 [kvm]
__handle_changed_spte+0x63c/0xca0 [kvm]
__handle_changed_spte+0x63c/0xca0 [kvm]
__handle_changed_spte+0x63c/0xca0 [kvm]
zap_gfn_range+0x549/0x620 [kvm]
kvm_tdp_mmu_put_root+0x1b6/0x270 [kvm]
mmu_free_root_page+0x219/0x2c0 [kvm]
kvm_mmu_free_roots+0x1b4/0x4e0 [kvm]
kvm_mmu_unload+0x1c/0xa0 [kvm]
kvm_arch_destroy_vm+0x1f2/0x5c0 [kvm]
kvm_put_kvm+0x3b1/0x8b0 [kvm]
kvm_vcpu_release+0x4e/0x70 [kvm]
__fput+0x1f7/0x8c0
task_work_run+0xf8/0x1a0
do_exit+0x97b/0x2230
do_group_exit+0xda/0x2a0
get_signal+0x3be/0x1e50
arch_do_signal_or_restart+0x244/0x17f0
exit_to_user_mode_prepare+0xcb/0x120
syscall_exit_to_user_mode+0x1d/0x40
do_syscall_64+0x4d/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
Note, the underlying bug existed even before commit 1af4a96025b3 ("KVM:
x86/mmu: Yield in TDU MMU iter even if no SPTES changed") moved calls to
tdp_mmu_iter_cond_resched() to the beginning of loops, as KVM could still
incorrectly advance past a top-level entry when yielding on a lower-level
entry. But with respect to leaking shadow pages, the bug was introduced
by yielding before processing the current gfn.
Alternatively, tdp_mmu_iter_cond_resched() could simply fall through, or
callers could jump to their "retry" label. The downside of that approach
is that tdp_mmu_iter_cond_resched() _must_ be called before anything else
in the loop, and there's no easy way to enfornce that requirement.
Ideally, KVM would handling the cond_resched() fully within the iterator
macro (the code is actually quite clean) and avoid this entire class of
bugs, but that is extremely difficult do wh
---truncated---
References
Impacted products
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cve-2021-47091
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mac80211: fix locking in ieee80211_start_ap error path
We need to hold the local->mtx to release the channel context,
as even encoded by the lockdep_assert_held() there. Fix it.
References
Impacted products
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cve-2021-47107
Vulnerability from cvelistv5
Published
2024-03-04 18:15
Modified
2024-12-19 07:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Fix READDIR buffer overflow
If a client sends a READDIR count argument that is too small (say,
zero), then the buffer size calculation in the new init_dirlist
helper functions results in an underflow, allowing the XDR stream
functions to write beyond the actual buffer.
This calculation has always been suspect. NFSD has never sanity-
checked the READDIR count argument, but the old entry encoders
managed the problem correctly.
With the commits below, entry encoding changed, exposing the
underflow to the pointer arithmetic in xdr_reserve_space().
Modern NFS clients attempt to retrieve as much data as possible
for each READDIR request. Also, we have no unit tests that
exercise the behavior of READDIR at the lower bound of @count
values. Thus this case was missed during testing.
References
Impacted products
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cve-2021-47084
Vulnerability from cvelistv5
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Show details on NVD website{
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.